Processing technology of tea caddy

By extruding and cooperating the aluminum plates with multiple stretching and clamping mechanisms, the complex production process of tea cans is solved and efficient production of tea cans is achieved.

CN119140672AInactive Publication Date: 2024-12-17DONGGUAN CITY WANXINLONG METAL MFG CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411370448.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2024-12-17
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The production process of tea cans is relatively troublesome, resulting in low production efficiency.

Method used

After the smooth aluminum plate is used for oil treatment, the tea can shape is gradually stretched by multiple stretching molds, and the continuous stretching and limiting is achieved in combination with the clamping mechanism and the conveying component, and the welding and grinding process are omitted.

Benefits of technology

The stretching speed of aluminum sheets is improved, the production process of tea cans is simplified, and the production efficiency is improved.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119140672A_ABST
    Figure CN119140672A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of tea caddy processing, and provides a tea caddy processing technology.The stretching equipment comprises conveying supports, clamping mechanisms, a supporting shell, a first supporting plate, a limiting sleeve and a second supporting plate, a conveying assembly is arranged between the two conveying supports, and the multiple clamping mechanisms are arranged on the conveying assembly; the supporting shell is fixedly installed on one conveying support, the first supporting plate is fixedly installed on the conveying supports, the six limiting sleeves are rotatably installed in the supporting shell through the driving assembly, six through holes are formed in the supporting shell, the second supporting plate is fixedly installed on the other conveying support, and the first supporting plate is fixedly installed on the second supporting plate. By means of the technical scheme, the tea caddy production device solves the problem that in the prior art, the production process of a tea caddy is troublesome, and therefore the production efficiency of the tea caddy production device is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of tea can processing, and in particular to a processing technology for a tea can. Background Art

[0002] Aluminum cups are cups made of aluminum as raw material. Aluminum cups have many uses in the food field. Due to the characteristics of aluminum, it becomes an ideal food packaging material.

[0003] For example, in beverage packaging, aluminum cups are widely used to package various beverages, such as soda, juice, coffee and tea. These cups are light, easy to carry, and can effectively keep the freshness and taste of beverages. For example, in convenience food packaging, aluminum cups are also used to package convenience foods, such as instant noodles, instant rice, etc. These cups usually have sealed lids and can be served directly without bowls. For example, in frozen foods, due to the cold resistance of aluminum, aluminum cups are also widely used in the packaging of frozen foods, such as ice cream cups. For example, in jelly and desserts, aluminum cups are often used to package jelly, pudding, ice cream and other desserts. They can provide an elegant packaging method and keep the freshness of food. For example, in take-out food convenience, aluminum cups can be used to package take-out foods, such as salads, soups and other hot foods. Such cups usually have sealed lids, which help maintain the temperature and humidity of food. For example, in baking utensils, aluminum cups are also often used as baking utensils for making cupcakes, egg tarts and other baked foods.

[0004] The most common aluminum cup in our daily life is the tea can. Tea cans are of great significance to the preservation of tea, making the tea last longer.

[0005] During the production process of most tea cans, the aluminum plate needs to be rolled up first, then welded to form a cylinder, and then ground and polished, and the base is welded to the cylinder. This makes the production process of the tea cans more complicated, thereby reducing its production efficiency. Summary of the invention

[0006] The invention provides a processing technology for a tea can, which solves the problem in the prior art that the production process of the tea can is complicated, thereby reducing the production efficiency.

[0007] The technical solution of the present invention is as follows: A processing technology for a tea can comprises the following steps:

[0008] S1. Aluminum plate pretreatment: Use the smooth aluminum plate as the raw material, and use food-grade varnish for oil treatment to obtain the aluminum sheet to be stamped;

[0009] S2. Stamping of circular aluminum sheet: stamping the aluminum sheet to obtain the circular aluminum sheet required for stretching, and then placing the circular aluminum sheet on the stretching equipment;

[0010] S3, primary straight tube stretching: placing the circular aluminum sheet on the first stretching die, and stretching to obtain a primary straight tube with a first diameter and a first height;

[0011] S4, secondary step straight tube stretching: put the primary straight tube into the secondary stretching die and stretch it to obtain a secondary step straight tube with a second diameter and a second height;

[0012] S5, three-step straight tube stretching: put the two-step straight tube into the three-step stretching die to stretch it to obtain a three-step straight tube with a third diameter and a third height;

[0013] S6, four-step straight tube stretching: put the three-step straight tube into the four-step stretching die to stretch it to obtain a four-step straight tube with a fourth diameter and a fourth height;

[0014] S7, five-step straight tube stretching: put the four-step straight tube into the five-step stretching die to stretch it to obtain a five-step straight tube with the fifth diameter and the fifth height;

[0015] S8, six-step straight tube stretching: put the five-step straight tube into the six-step stretching die to stretch it to obtain a six-step straight tube with a sixth diameter and a sixth height;

[0016] S9, stretching and shaping: stretching and shaping the six-step straight tube to obtain an aluminum stretching cup;

[0017] S10, post-processing of aluminum cup: trim and round the edges of the formed aluminum cup, and curl the top of the product to prevent burrs and sharp edges on the product, and then complete the post-processing.

[0018] Furthermore, the stretching equipment in step S2 includes:

[0019] A conveying bracket, wherein two conveying brackets are provided, and a conveying component is provided between the two conveying brackets;

[0020] A clamping mechanism, wherein a plurality of the clamping mechanisms are arranged on the conveying assembly, and the clamping mechanisms are used to clamp the circular aluminum sheet;

[0021] A supporting shell, the supporting shell being fixedly mounted on one of the conveying brackets;

[0022] A support plate 1, wherein the support plate 1 is fixedly mounted on the conveying bracket and is located at one side of the supporting shell, and six concave molds are mounted on the support plate 1;

[0023] A limiting sleeve, wherein six limiting sleeves are provided, and the six limiting sleeves are rotatably installed in the supporting shell through a driving assembly, and six through holes are opened on the supporting shell, and the six limiting sleeves respectively penetrate the six through holes, and the six limiting sleeves are respectively in contact with and matched with the six concave dies;

[0024] Support plate 2, the support plate 2 is fixedly mounted on another of the conveying brackets, and six convex molds are mounted on the support plate 2.

[0025] Furthermore, the transmission component includes:

[0026] Conveyor belt, two conveyor brackets are rotatably mounted with multiple conveyor shafts, and the conveyor belt is drivingly connected to the multiple conveyor shafts through multiple conveyor wheels;

[0027] Motor 1, the motor 1 is installed on one of the transmission brackets, and the output end of the motor 1 is fixedly connected to one of the transmission shafts.

[0028] Furthermore, the clamping mechanism comprises:

[0029] A bottom plate, the bottom plate is fixedly mounted on the conveyor belt;

[0030] A U-shaped groove, the U-shaped groove is fixedly mounted on the bottom plate, and the U-shaped groove is provided with two openings;

[0031] A sliding shaft, the sliding shaft is slidably installed between the two openings;

[0032] A supporting rotating plate, wherein the supporting rotating plate is rotatably mounted on the sliding shaft;

[0033] A U-shaped push plate, wherein the U-shaped push plate is slidably connected to the two openings, and the sliding shaft is fixedly connected to the U-shaped push plate, a fixed bent rod is fixedly installed on the U-shaped push plate, and a clamping plate is fixedly installed on the fixed bent rod;

[0034] A limit housing, the limit housing is fixedly mounted on the top of the support rotating plate, and a limit hole is provided on the limit housing;

[0035] A discharging assembly, wherein the discharging assembly is arranged on the limiting housing;

[0036] A limiting assembly, wherein a plurality of the limiting assemblies are arranged on the top of the limiting shell.

[0037] The working principle and beneficial effects of the present invention are:

[0038] 1. In the present invention, by installing the clamping mechanism, the circular aluminum sheet can be continuously conveyed and better limited at the same time, and cooperate with the limiting sleeve to better convey the circular aluminum sheet;

[0039] 2. In the present invention, by installing the support shell, the support plate 1, the support plate 2 and the driving assembly to cooperate with each other, the aluminum sheet can be stretched quickly while ensuring the continuity of the aluminum sheet stretching, and the welding and grinding processes are saved, and the round aluminum sheet is directly stretched into the shape of a tea can, thereby improving the speed of stretching the aluminum sheet;

[0040] 3. In the present invention, by installing the clamping mechanism, the support shell, the support plate 1, the support plate 2 and the driving assembly to cooperate with each other, the problem of the complicated production process of the tea can in the prior art, thereby reducing its production efficiency, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at point A in the middle;

[0044] Figure 3 It is a schematic diagram of the structure of the clamping mechanism and the transmission assembly of the present invention;

[0045] Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0046] Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0047] Figure 6 This is a schematic diagram of the structure of the support plate 1, the support housing and the drive assembly of the present invention;

[0048] Figure 7 It is a schematic structural diagram of a partial cross-section of the cooperation among the support plate 1, the support shell and the drive assembly of the present invention.

[0049] In the figure: 1. conveying bracket; 2. supporting shell; 3. supporting plate 1; 4. limiting sleeve; 5. supporting plate 2; 6. conveyor belt; 7. motor 1; 8. bottom plate; 9. U-shaped groove; 10. sliding shaft; 11. supporting rotating plate; 12. U-shaped push plate; 13. card plate 1; 14. limiting shell; 15. fixed shaft; 16. limiting plate; 17. torsion spring; 18. push rod; 19. placing plate; 20. pulley 1; 21. spring; 22. push rod; 23. card plate 2; 24. cylinder 1; 25. slide 1; 26. cylinder 2; 27. cylinder 3; 28. slide 2; 29. ​​motor 2; 30. supporting shaft; 31. elastic rod; 32. pulley 2. DETAILED DESCRIPTION

[0050] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] like Figures 1 to 7 As shown, this embodiment proposes a tea can processing technology, including the following steps:

[0052] S1. Aluminum plate pretreatment: Use the smooth aluminum plate as the raw material, and use food-grade varnish for oil treatment to obtain the aluminum sheet to be stamped;

[0053] S2. Stamping of circular aluminum sheet: stamping the aluminum sheet to obtain the circular aluminum sheet required for stretching, and then placing the circular aluminum sheet on the stretching equipment;

[0054] S3, primary straight tube stretching: placing the circular aluminum sheet on the first stretching die, and stretching to obtain a primary straight tube with a first diameter and a first height;

[0055] S4, secondary step straight tube stretching: put the primary straight tube into the secondary stretching die and stretch it to obtain a secondary step straight tube with a second diameter and a second height;

[0056] S5, three-step straight tube stretching: put the two-step straight tube into the three-step stretching die to stretch it to obtain a three-step straight tube with a third diameter and a third height;

[0057] S6, four-step straight tube stretching: put the three-step straight tube into the four-step stretching die to stretch it to obtain a four-step straight tube with a fourth diameter and a fourth height;

[0058] S7, five-step straight tube stretching: put the four-step straight tube into the five-step stretching die to stretch it to obtain a five-step straight tube with the fifth diameter and the fifth height;

[0059] S8, six-step straight tube stretching: put the five-step straight tube into the six-step stretching die to stretch it to obtain a six-step straight tube with a sixth diameter and a sixth height;

[0060] S9, stretching and shaping: stretching and shaping the six-step straight tube to obtain an aluminum stretching cup;

[0061] S10, post-processing of aluminum cup: trim and round the edges of the formed aluminum cup, and curl the top of the product to prevent burrs and sharp edges on the product, and then complete the post-processing.

[0062] Among them, the stretching equipment in step S2 includes: a conveying bracket 1, a clamping mechanism, a supporting shell 2, a supporting plate 1 3, a limiting sleeve 4 and a supporting plate 2 5. Two conveying brackets 1 are provided, and a conveying component is provided between the two conveying brackets 1. A plurality of clamping mechanisms are provided on the conveying component, and the clamping mechanism is used to clamp the round aluminum sheet. The supporting shell 2 is fixedly installed on one of the conveying brackets 1, and the supporting plate 1 3 is fixedly installed on the conveying bracket 1, and the supporting plate 1 3 is located on one side of the supporting shell 2. Six concave dies are installed on the supporting plate 1 3, and six limiting sleeves 4 are provided. The six limiting sleeves 4 are rotatably installed in the supporting shell 2 through the driving component, and six through holes are opened on the supporting shell 2. The six limiting sleeves 4 respectively penetrate the six through holes, and the six limiting sleeves 4 respectively contact and cooperate with the six concave dies. The supporting plate 2 5 is fixedly installed on the other conveying bracket 1, and six convex dies are installed on the supporting plate 2 5.

[0063] Specifically, the transmission component includes: a conveyor belt 6 and a motor 7. Two conveyor brackets 1 are rotatably installed with multiple conveyor shafts. The conveyor belt 6 is transmission-connected to the multiple conveyor shafts through multiple conveyor wheels. The motor 7 is installed on one of the conveyor brackets 1, and the output end of the motor 7 is fixedly connected to one of the conveyor shafts.

[0064] Correspondingly, the clamping mechanism includes: a bottom plate 8, a U-shaped groove 9, a sliding shaft 10, a supporting rotating plate 11, a U-shaped push plate 12, a limiting shell 14, a discharging assembly and a limiting assembly. The bottom plate 8 is fixedly mounted on the conveyor belt 6, the U-shaped groove 9 is fixedly mounted on the bottom plate 8, two openings are provided on the U-shaped groove 9, the sliding shaft 10 is slidably mounted between the two openings, the supporting rotating plate 11 is rotatably mounted on the sliding shaft 10, the U-shaped push plate 12 is slidably connected with the two openings, and the sliding shaft 10 is connected to the U-shaped push plate 12. The U-shaped push plate 12 is fixedly connected, a fixed bent rod is fixedly installed on the U-shaped push plate 12, a card plate 13 is fixedly installed on the fixed bent rod, a limit housing 14 is fixedly installed on the top of the support rotating plate 11, a limit hole is opened on the limit housing 14, a discharging assembly is arranged on the limit housing 14, and a plurality of limit assemblies are arranged on the top of the limit housing 14, wherein the limit assembly comprises: a fixed shaft 15, a limit plate 16 and a torsion spring 17, a support cover is fixedly installed on the limit housing 14, a fixed shaft 15 is fixedly installed in the support cover, a limit plate 16 and a torsion spring 17 are arranged on the limit housing 14 ... fixed shaft 15 is fixedly installed in the support cover, a limit hole is opened on the limit housing 14, a discharging assembly is arranged on the limit housing 14, and a plurality of limit assemblies are arranged on the top of the limit housing 14, wherein a fixed shaft 15, a limit plate 16 and a torsion spring 17 are arranged on the limit housing 14, a fixed shaft 15 is fixedly installed in the support cover, a limit hole is opened on the limit housing 14, a discharging assembly is arranged on the limit housing 14, a limit hole is opened on the limit housing 14, a discharging assembly is arranged on the limit housing 14, and a plurality of limit assemblies are arranged on the top of the limit housing 14, a limit hole is opened 16 is rotatably mounted on the fixed shaft 15, and one end of the limit plate 16 can block the aluminum sheet in the limit hole. Two torsion springs 17 are provided. The two torsion springs 17 are sleeved on both sides of the fixed shaft 15. One end of the two torsion springs 17 is fixedly connected to the inner side wall of the support cover, and the other end of the two torsion springs 17 is fixedly connected to both sides of the limit plate 16. The discharging assembly includes: a push rod 18, a spring 21 and a push rod 22. The push rod 18 is arranged inside the limit housing 14, and the push rod 18 is slidably matched with the limit hole. A placing plate 19 is fixedly installed on the top of the push rod 18, a pulley 20 is rotatably installed on the bottom of the push rod 18, two springs 21 are provided, and a fixing plate is fixedly sleeved on the lower side of the push rod 18. One end of the two springs 21 is fixedly connected to the inner bottom wall of the limit shell 14, and the other end of the two springs 21 is fixedly connected to the fixing plate. A push rod 22 is slidably installed on the limit shell 14, and one end of the push rod 22 located inside the limit shell 14 is in an inclined state, and a clamping plate 23 is fixedly installed on the other end of the push rod 22.

[0065] Specifically, one of the conveying brackets 1 is equipped with a cylinder 24, and a slide groove 25 is fixedly installed on the output end of the cylinder 24, and the second card plate 23 is slidably matched with the slide groove 25. When the ejector rod 22 is parallel to the conveyor belt 6, the ejector rod 22 is pushed by the cylinder 24 to make the placement plate 19 rise, and a cylinder 26 is installed at the bottom of the conveying bracket 1. The cylinder 26 is located at the center line of the support shell 2. When the ejector rod 22 is perpendicular to the conveyor belt 6, the cylinder 26 pushes the ejector rod 22 to make the placement plate 19 pop out, wherein, a cylinder 3 27 is installed on the other conveying bracket 1, and a slide groove 28 is fixedly installed on the output end of the cylinder 3 27. The card plate 13 is slidably matched with the slide groove 25, and the cylinder 3 27 is used to drive the U-shaped push plate 12 to slide on the two openings.

[0066] Correspondingly, the driving assembly includes: a motor 29, a support shaft 30, a support shaft 30 and an elastic rod 31. The motor 29 is installed on the support shell 2. The output end of the motor 29 passes through the support shell 2 and is fixedly installed with the support shaft 30. There are six elastic rods 31, and the six elastic rods 31 are fixedly installed on the support shaft 30. The telescopic ends of the six elastic rods 31 are respectively fixedly connected with six limiting sleeves 4. A pulley 2 32 is rotatably installed on each limiting sleeve 4. A limiting groove is provided on the inner wall of the support shell 2, and the six pulleys 2 32 rotate in the limiting groove.

[0067] It should be noted that the shapes of the support shell 2, the support plate 1 3 and the support plate 2 5 are similar to cams, so that the limiting sleeve 4, the punch and the die have a lowest point.

[0068] In this embodiment, the working principle of the stretching equipment is as follows: after the aluminum plate is cut into the required round aluminum sheet, the motor 7 is started, and the motor 7 drives the conveyor belt 6 to move through the conveyor shaft, so that the slide 25 moves in the direction of the card plate 23, so that the card plate 23 slides into the slide 25, and then the cylinder 24 is started, and the cylinder 24 pushes the corresponding ejector rod 22 to make the ejector rod 22 slide on the limit housing 14. As the ejector rod 22 slides into the limit housing 14, the sloped end of the ejector rod 22 fits with the pulley 20, and the pulley 20 will move toward the top of the limit housing 14 with the slope of the ejector rod 22, so that the push rod 18 pushes to prevent the plate from moving upward, and the plate 1 is placed. When the plurality of limit plates 16 rotate on the plurality of fixed shafts 15 respectively, and the two springs 21 are stretched, and the plurality of limit plates 16 rotate at the same time, the plurality of torsion springs 17 are subjected to torsion, and after the plurality of limit plates 16 rotate ninety degrees on the plurality of fixed shafts 15 respectively, the placement plate 19 is aligned with the top ends of the plurality of limit plates 16, and then the circular aluminum sheet is placed on the placement plate 19, and then the cylinder 1 24 is reset with the ejector rod 22 through the card plate 2 23 and the slide groove 1 25, and at the same time, the two springs 21 are reset with the placement plate 19, and then the conveyor belt 6 moves the circular aluminum sheet and the limit housing 14, so that the slide groove 28 is docked with the card plate 13, and the card plate 13 slides The cylinder 2 is pressed into the slide groove 28, and then the cylinder 3 is started. The cylinder 3 27 brings the U-shaped push plate 12 to slide in the two openings 1, and the sliding shaft 10 slides with the U-shaped push plate 12. At this time, the sliding shaft 10 drives the supporting rotating plate 11 to rotate in the U-shaped groove 9, thereby driving the limiting shell 14 to rotate, so that the limiting shell 14 rotates ninety degrees in the direction of the supporting shell 2, and then the cylinder 2 26 is started. The cylinder 2 26 pushes the ejector rod 22, so that the ejector rod 22 pushes the pulley 1 20, the push rod 18 and the placement plate 19 to move in the direction of the limiting sleeve 4. Because the limiting plate 16 blocks the limiting hole, the round aluminum sheet will not fall. At this time, the round aluminum sheet will also move in the direction of the limiting sleeve 4, and push against multiple limiting holes through the placement plate 19. Plate 16 rotates on the corresponding fixed shaft 15 to open the limit plate 16, and multiple limit plates 16 rotate ninety degrees on the corresponding fixed shaft 15 to make one end of multiple limit plates 16 contact with the current sleeve, and cylinder two 26 makes the placement plate 19 continue to move until the circular aluminum sheet is pushed into the limit sleeve 4 located on the lower side of the support shell 2. At this time, the bottom of the placement plate 19 will not exceed the length of the limit plate 16. After the circular aluminum sheet is pushed into the current sleeve located on the lower side of the support shell 2, the cylinder three 27 drives the limit shell 14 to reset, and then the conveyor belt 6 continues to drive the limit shell 14 to transport a certain distance, and the punch located on the lower side of the support plate two 5 and the die located on the lower side of the support plate one 3 cooperate to stretch the circular aluminum sheet.

[0069] After the circular aluminum sheet is stretched for the first time, start motor 29, which drives the support shaft 30 to rotate. As the support shaft 30 rotates, the six elastic rods 31 rotate with the six dies in the support shell 2, and the pulley 2 32 rotates in the limiting groove. At this time, the limiting sleeve 4 on the lower side rotates to the next position. At this time, the limiting sleeve 4 with the aluminum sheet stretched for the first time is aligned with the next coating and die, and then stretched for the second time through the corresponding coating and die, and so on until it is removed after being stretched six times. When the circular aluminum sheet is stretched for the second time, the next circular aluminum sheet can be sent to the limiting sleeve 4 on the lower side of the support shell 2 through the above steps.

[0070] It should be noted that after the circular aluminum sheet in the limiting shell 14 is sent to the limiting sleeve 4, the limiting shell 14 is transferred to one side of the cylinder 1 24, and the clamping plate 23 slides into the slide groove 1 25, and the circular aluminum sheet is placed on the placement plate 19, and then the cylinder 1 24 drives the ejector rod 22 to reset.

[0071] It should also be noted that the following parameters can be used for raw materials and process control: the thickness of the raw aluminum plate is 0.3mm, and the oil thickness is 0.01mm; the first diameter is 129mm, and the first height is 99mm; the second diameter is 109mm, and the second height is 115mm; the third diameter is 89mm, and the third height is 113mm; the fourth diameter is 72mm, and the fourth height is 100mm; the fifth diameter is 66mm, and the fifth height is 100mm; the sixth diameter is 57mm, and the sixth height is 100mm.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing technology for tea cans, It is characterized in that The following steps are involved: S1. Aluminum plate pretreatment: Use the smooth aluminum plate as the raw material, and use food-grade varnish for oil treatment to obtain the aluminum sheet to be stamped; S2. Stamping of circular aluminum sheet: stamping the aluminum sheet to obtain the circular aluminum sheet required for stretching, and then placing the circular aluminum sheet on the stretching equipment; S3, primary straight tube stretching: placing the circular aluminum sheet on the first stretching die, and stretching to obtain a primary straight tube with a first diameter and a first height; S4, secondary step straight tube stretching: put the primary straight tube into the secondary stretching die and stretch it to obtain a secondary step straight tube with a second diameter and a second height; S5, three-step straight tube stretching: put the two-step straight tube into the three-step stretching die to stretch it to obtain a three-step straight tube with a third diameter and a third height; S6, four-step straight tube stretching: put the three-step straight tube into the four-step stretching die to stretch it to obtain a four-step straight tube with a fourth diameter and a fourth height; S7, five-step straight tube stretching: put the four-step straight tube into the five-step stretching die to stretch it to obtain a five-step straight tube with the fifth diameter and the fifth height; S8, six-step straight tube stretching: put the five-step straight tube into the six-step stretching die to stretch it to obtain a six-step straight tube with a sixth diameter and a sixth height; S9, stretching and shaping: stretching and shaping the six-step straight tube to obtain an aluminum stretching cup; S10, post-processing of aluminum cup: trim and round the edges of the formed aluminum cup, and curl the top of the product to prevent burrs and sharp edges on the product, and then complete the post-processing.

2. The processing technology of a tea can according to claim 1, It is characterized in that The stretching device described in step S2 includes: A conveying bracket (1), wherein two conveying brackets (1) are provided, and a conveying component is provided between the two conveying brackets (1); A clamping mechanism, wherein a plurality of the clamping mechanisms are arranged on the conveying assembly, and the clamping mechanisms are used to clamp the circular aluminum sheet.

3. The processing technology of a tea can according to claim 2, It is characterized in that The transmission component comprises: A supporting shell (2), wherein the supporting shell (2) is fixedly mounted on one of the conveying brackets (1); A support plate (3), wherein the support plate (3) is fixedly mounted on the conveying bracket (1), and the support plate (3) is located on one side of the supporting shell (2), and six concave molds are mounted on the support plate (3).

4. The processing technology of a tea can according to claim 3, It is characterized in that The transmission component comprises: A limiting sleeve (4), wherein six limiting sleeves (4) are provided, and the six limiting sleeves (4) are rotatably installed in the supporting shell (2) through a driving assembly, and six through holes are opened on the supporting shell (2), and the six limiting sleeves (4) respectively pass through the six through holes, and the six limiting sleeves (4) respectively contact and cooperate with the six concave dies.

5. The processing technology of a tea can according to claim 4, It is characterized in that The transmission component comprises: Support plate 2 (5), the support plate 2 (5) is fixedly mounted on another of the conveying brackets (1), and six convex molds are mounted on the support plate 2 (5).

6. The processing technology of a tea can according to claim 5, It is characterized in that The transmission component comprises: A conveyor belt (6), wherein the two conveyor brackets (1) are rotatably mounted with a plurality of conveyor shafts, and the conveyor belt (6) is drivingly connected to the plurality of conveyor shafts via a plurality of conveyor wheels; Motor 1 (7), wherein the motor 1 (7) is mounted on one of the transmission brackets (1), and the output end of the motor 1 (7) is fixedly connected to one of the transmission shafts.

7. The processing technology of a tea can according to claim 6, It is characterized in that The clamping mechanism comprises: A bottom plate (8), wherein the bottom plate (8) is fixedly mounted on the conveyor belt (6); A U-shaped groove (9), wherein the U-shaped groove (9) is fixedly mounted on the bottom plate (8), and two openings are formed on the U-shaped groove (9).

8. The processing technology of a tea can according to claim 7, It is characterized in that The clamping mechanism comprises: A sliding shaft (10), the sliding shaft (10) being slidably mounted between the two openings; A supporting rotating plate (11), wherein the supporting rotating plate (11) is rotatably mounted on the sliding shaft (10); A U-shaped push plate (12), the U-shaped push plate (12) is slidably connected to the two openings, and the sliding shaft (10) is fixedly connected to the U-shaped push plate (12), a fixed bent rod is fixedly installed on the U-shaped push plate (12), and a clamping plate (13) is fixedly installed on the fixed bent rod.

9. The processing technology of a tea can according to claim 8, It is characterized in that The clamping mechanism comprises: A limit shell (14), wherein the limit shell (14) is fixedly mounted on the top of the supporting rotating plate (11), and a limit hole is provided on the limit shell (14); A discharging assembly, the discharging assembly being arranged on the limiting housing (14); A limit assembly, wherein a plurality of limit assemblies are arranged on the top of the limit shell (14).